is this possible? will my shrimps die coz the co2 will be on 24 hrs. currently if connected to a power head which is connected to light timers so the diffudion stops automatically when the lights turn off.
The thing to be really mindful of is your PH. You're forming carbonic acid so you may get a PH crash. Also, if the flow is too high you can asphyxiate the critters. I let my CO2 run 24-7 and I haven't had any problems after the initial start-up (the first night, I had a near disaster with the fish found floating on top and gasping for air in the morning. This was all because the flow was way too high, fortunately the fish all survived).
so u think i should continue using the powerhead method which im using currently? i have a shrimp/moss breeding tank. i dont wana risk my shrimps life, they are breeding happily. was tierd of internal filter so shifting to canister.
If you're concerned about a night time spike in Co2 levels, you could put an airstone in the tank, connected to a timer so that it is only on at night, maybe from an hour before lights out to a couple hours before lights on. Then the plants have enough Co2 during the day, and the shrimp will have enough O2 at night while the plants are not producing it. Just a thought.
I have DIY Co2 on 24 hours, but I use a small sponge filter in the tank and it produces bubbles all the time; not the best for keeping Co2 in the water, but good for maintaining a safe buffer of oxygen so I don't gas the critters.